Process for preparing enantiomerically pure alpha phenyl-alpha (6,7-dihydro-4h-thieno[3,2-c]pyridin-5-yl)-acetic acid derivatives
申请人:Arul Ramakrishna
公开号:US20050049415A1
公开(公告)日:2005-03-03
A process for preparing a substantially enantiomerically pure compound of formula (IV), or a pharmaceutically acceptable salt thereof wherein: R is hydrogen or a Cl alkyl group and X, Y and Z are any atom or group, comprising a step of isolating a substantially enantiomerically pure compound of formula (V) wherein: R
3
is CN or C(O)NR
1
R
2
and R
1
and R
2
are each independently hydrogen or a C
1
-C
4
alkyl group, or, together with the nitrogen in the C(O)NR
1
R
2
group, form a ring that includes 2-6 carbon atoms, from a racemate of formula (V) and converting the substantially enantiomerically pure compound of formula (V) into a substantially enantiomerically pure compound of formula (IV).
一种制备公式(IV)的基本对映体纯化化合物或其药学上可接受的盐的方法,其中:R为氢或Cl烷基,X、Y和Z为任意原子或基团,包括从公式(V)的基本对映体纯化化合物中分离出一步,其中:R3是CN或C(O)NR1R2,R1和R2分别独立地是氢或C1-C4烷基,或者与C(O)NR1R2中的氮一起形成包括2-6个碳原子的环,从公式(V)的外消旋体转化为公式(IV)的基本对映体纯化化合物。